The unmanned aerial vehicle( UAV) was able to acquire remote sensing images with low cost, precise and high
spatial resolution information needed by management of Land use at desired time. The aim of this paper was to present
an overview of the ongoing research on the potential and techniques of low-altitude UAV system for land use
applications. The development of crucial subsystems consisting of the UAV platforms, multiple camera system, camera
calibration and photogrammetric production, was introduced together. A procedure of images acquisition and
photogrammetric processing was proposed. To detect land use changes, methods based on DSMs and DLG were
discussed and adopted in this paper. Finally, analysis of land use research based UAVs was realized on real flight
experiments of two study areas. The results of this study show that UAVs can be used successfully for land use change
A uav-based system equiped with a non-metric camera for low altitude photogrammetric applications was introduced in
this paper. The system is very inexpensive since it utilizes readily available unmanned airplane and common non-metric
digital cameras. Aim of the paper is to give solutions to problems derived from the image processing. In the first step,the
camera parameters of inner orientation and geometric distortions were solved by means of self-calibrating bundle
adjustment with own developed software and the non-metric camera was evaluated. The second part concerntrates on
the aerial triangulation process to deal with high redundant images acquired with the uav-based system. Finally, the
utility of the system for photogrammetric applications was demonstrated with a test flight in China.
The LOD technology has an impact upon the multi-scale representation of spatial database. This paper takes advantage of LOD technology to express the multi-scale geographical data, and establish the exchange of multi-scale electronic map, further attain the goal that the details of geographic features such as point, line and polygon can be displayed more and more clearly with the display scale being enlarged to be convenient for the personnel of all offices of industry and commerce administration to label the locations of the corporations or enterprises.